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Commit 9506563f authored by Marissa Wall's avatar Marissa Wall
Browse files

gralloc: update doc to reflect security change 

The MetadataType must be prepended to any StandardMetadataType byte
stream. The encode/decode support library already adds the MetadataType.
This patch updates the documentation.

Test: Compiles
Bug: 137966819

Change-Id: I620f3cc0edd088b062844bb7a718f34360454d71
parent 4bb9cab2

graphics/common/aidl/android/hardware/graphics/common/StandardMetadataType.aidl

+9 −0
Original line number Diff line number Diff line
@@ -24,6 +24,15 @@ package android.hardware.graphics.common; 
 *

 * IMapper@4.x must support getting the following standard buffer metadata types. IMapper@4.x may

 * support setting these standard buffer metadata types as well.

 *

 * When encoding these StandardMetadataTypes into a byte stream, the associated MetadataType is

 * is first encoded followed by the StandardMetadataType value. The MetadataType is encoded by

 * writing the length of MetadataType.name using 8 bytes in little endian, followed by a char

 * array of MetadataType.name's characters. The char array is not null terminated. Finally,

 * MetadataType.value is represented by 8 bytes written in little endian.

 *

 * The StandardMetadataType encode/decode support library can be found in:

 * frameworks/native/libs/gralloc/types/include/gralloctypes/Gralloc4.h.

 */

@VintfStability

@Backing(type="long")